发明名称 |
Progressive video refresh slice detection |
摘要 |
A selective encryption encoder and method of dual selective encryption and detection of intra-coded slices in video content. The selective encryption encoder has a packet identifier that identifies packets of at least one specified packet type, the at least one specified packet type being packets in a set of N consecutive slices in a frame wherein the a second byte after a slice start code is identical in all N consecutive slices. A packet duplicator duplicates the identified packets to produce first and second sets of the identified packets. The packets are sent to and from a primary encryption encoder to encrypt the first set of identified packets under a first encryption method. A secondary encrypter encrypts the second set of identified packets under a second encryption method.
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申请公布号 |
US2003156718(A1) |
申请公布日期 |
2003.08.21 |
申请号 |
US20020303594 |
申请日期 |
2002.11.25 |
申请人 |
CANDELORE BRANT L.;DEROVANESSIAN HENRY;PEDLOW LEO M. |
发明人 |
CANDELORE BRANT L.;DEROVANESSIAN HENRY;PEDLOW LEO M. |
分类号 |
H04B1/66;H04L9/14;H04N7/12;H04N7/167;H04N11/02;H04N11/04;(IPC1-7):H04N7/167 |
主分类号 |
H04B1/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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